Holder



Patented Sept. 21, 1954 HOLDER George W; Willits, Hinsdale; Illi, assignor to .I'olinson- & llfolinson, a. corporation-V of' New4 Jersey' Application. Jutne` I8; 1951, Serial No.. 232,231

1F Claim.

The present invention` relates to a lter pad holder'of a type adapted to facilitate the sanitary7 removal of individual filter pads therefrom.

A container ofA a. certain type; employed especially for' filter pads, comprises a rectangular box-likestructure, mad-'e of'relatively'cheapmateriaf7 inwhich two stacks. ofcompressed lter pads,

used in ltering'iuids', or' more particularly milk on' dairyfarms orthe like, are stored until readyl for use.

Another `object of" my invention to provide a container having a plurality-ofst'iff" top andV bottom members,V in between' which stacks o1' filter pads are held under compression, saidI stii topmembers" providing individual protectiveA interiorv coverings'for thelter pad stacks, one Suchstack being'protected and kept covered during: the extraction; and depletion of the other stack;

A furtherobiect, isto. have alter holder which will render the. topmost 'lter pad easily accessible for individual and; successive removal.

One particular object of this' invention isA to providea lterpadA holder of' comparativelysimple' construction which is provided with a gripping nap extending over its upper'centrali portion' and which may be easily' distinguished from the adjacent flap areas of the container',l thereby permitting'less visual" concentration to locate thel gripping tab; for' initial opening of the container.

Another and' more general"` object is` to.` provide anP improved :filter pad' holder, practical' to the point. of simplicity, and in which filter pads are stored, and extracted in a most satisfactory and sanitary manner.

In this. specication. andj accompanying drawings I' have shown and described' preferred ernodiments of; my invention, but it is, to be understood. that. these, are, not intended to be exhaustive nor limiting of the, invention but on the. oon.- trary, are. given` for. purposes, o` illustration in order. that others` skilled in. the, artY may understand. the4 principles. thereofy and. in the manner of` applying. it to various.- forms..

The principles and. various other objects of` my invention` will` be more4 apparent.from the i following; descriptionand. inspection of the` accompany-- ing drawings in which,

lig.` L' is; a perspective.y View et a completely sealed` iilter` holden, showing; in'. dot and dash.4 lines its right hand; endl iiapsl flared: opento re,- ceive: aicom pressedstackr ci? rlter' pads., parts being; broken: away andi in cross` section;

Fig; 2l illustrates.I im perspectiva and` on` an. enlarged scale a fragmental portion; ofL 1L. showing the gripping; tao of. a hinged cover member partially severed, preparatory to being swung fully open as shown in Fig'. 31,'

Fig. 3 isa perspective similar to Fig. 1A showing a hinged cover member swung fully open after severance along" lines' of perforations;

Fig'. 41 shows-on anenlarged scale an end view of the ilter holder looking from the left of Fig. 1';

Fig. 5 is a perspective View similar to Fig. 1 which shows the hinged cover closed and' its grippingV tab tucked inside of the container;

Fig. 6t is a horizontal cross-section on an enlarged scale-taken al'ong line 6-'6A of Fig. 1;

Fig. 7 shows a fragmental cross-section on an enlarged scale of an individual lter pad in it natural uncompressed iiuiystate; andv Fig; 8'- is a View` similar to Fig. '7 showing the filter pad compressed a'sseen in Fig. l.

Referring now to Figures 1, 2, 3i, 4l, 5 and 6i of the dra-wings, thecontainer herein shown', is of the type-n especially employed' for filter pads, and'- oomprises a rectangular' box-like structure I0' completely sealed, and having' relatively wide top and bottom portions` lZ andl |42 respectively, andi relatively narrow sides it"y andi |-'8 respectively, and sealed' ends 201 and 22 respectively. The sealed ends 28', Z2 comprising conventional sealing naps 2'4, onel or both of said ends 20'; 22 which may be left temporarilyA unsealed, as best shown in dot and dash lines at the right handl end' cf the con.- tainer Ifllf of Fig. 1 for the insertion therethrough ofone or more stacks of iluiy resilient lterI pads, which willlater be described.

The top portion |12 ofthe container IU, refer-V ring morel particularly to Fig. l comprises three panels 2S', 28' and; SGrrespectively, divided in this instance andas illustrated, by two special parallel lines oil perforati'ons 32 extending transversely across thecontainer top l2 to denne a central portion 28i` thereof adapted?, when separa-ted"` along such lines of perforations 32 to: provide a hinged cover 34, said" cover being: hinged along its rear edge thereof asat 36. and best shown in. Figure 3.

The container top I2 is'scoredl to form a downwardly overlapping' sealing flap 38, said flap 38 comprising two` laterally co-extending outer andi inner areas 453? and 412* respectively; the inner area 42 being adhesivelysecuredalong one of the'rela-` tively narrow si'd'es lf3 of' the container I0' in its normally unopened state (fsee Fig; 2). The centrally located' portion of thel outer area 110i ofsaid' flap-33?, as'denedloysaidl lines of perfor'ations 32 being adapt-ed to form a gripping tab 4W? for the hinged cover 34?, said' lines` oi' perforations.' 32 defining the gripping'tabdd" and its adjacent inner area, having less perforations`I per inch but longer perforations to. facilitate a quickopening action.

In the illustrations of Figures 2 and 3, two stacks of originally iluffy, voluminous and resilient filter pads 46 are shown, compressed between two pairs of relatively stiff top and bottom members 48 and 50 respectively. Such a stack of cornpressed lters is shown in dot and dash lines to the right of Fig. 1 and in a position to be inserted through the open flaps 24 of the end 22 prior to sealing.

As will be seen from the drawing the relatively stili top and bottom members 48 and 50 are placed within the container I and between the top I2 and the bottom I4 of said container, and in adjacent and abutting relation to one another, said abutting relation being along the vertical, transverse center plane passing through the container.

The individual filter pads 52 (see Figs. l and 8) comprising said stacks 46, and shown herein as circular in contour, are made of unwoven material such as cut from superimposed thin fluffy webs of carded cotton fibers having, for example, 100 to 600 grains per square yard, and by weight '7 to 10 square yards to the pound, the fibers are processed and bleached, then run through a starch bath before baking in an oven, the resultant web of unwoven material from which the filter pads are cut, is therefore, one of voluminous, resilient and a fluffy texture, having upper and lower surfaces slightly denser and less fluffy than its interior bers, which facilitates the easy extraction of the topmost filter pad from the rest of the stack when under compression. k

A stack of filter pads may vary, by way of example from 600 to 1000 pads for a 6" stack, in their natural uncompressed state, said stack being compressible to a fraction of its former height, for example to about 21/2.

In Figure 3 it will be seen that lthe stacks 46 of originally fluffy, voluminous and resilient filter pads 52, substantially ll the container l0. The central panel 28 of container top l2 is shown separated along its lines of perforations 32, and now servesy as a hinged cover 34, said cover when swung open, exposes the abutting end portions of the top sheet members 48. In the illustration. one of the top sheet members 48 has been extracted, exposing in turn a substantial portion of the topmost filter pads for their successive removal from the container l0, and whereby the container top end panels 26 and 33 assume the function of holding the stack portions therebelow under compression, and the exposed and freed portion of said stack is caused to expand and reassume their original fluny characteristics. Edges 54 and 56 formed along said lines of perforations 32 by the separation of the center panel 28 from the adjacent panels 25 and 3B, thus cause the freed topmost lter pads to fan and project above the container top and present the toprnost pads for individual gripping and removal.

As shown best in Figs. l, 2, 3 and 5 the downwardly overlapping sealing flap 38 is divided into a central flap portion and adjacent ap portions along aforesaid lines of perforations 32, said central flap portion having contrasting characteristics, with respect to its adjacent end flap portions, such as line shading, arrows, shaped aps or as in this disclosure by color contrast. This visual means of identification of the gripping tab from, the adjacent ilap portions is a distinct advantage to the operator.

As will be fully appreciated by the operators using this filter container, other advantages for opening and gripping said gripping flap 44 will become apparent. In conventional containers of a similar type it has always been a problem to initiate severance of overlapping sealing aps, such as along aforesaid lines of perforations 32. Some containers have for instance their overlapping, combined sealing and gripping flaps comprising a single area adhesively secured to the container along its side, thereby making it diilicult to initiate any opening action other than by tearing. Other types rely on lines of perforations only, whereby external pressure such as by theuse of thumbs is necessary to initiate severance along its lines of perforations. Undue pressure may, and frequently does, tear or fracture the sidewall of said containers, thereby subjecting its contents to contamination from outside sources due to such fracture.

As best shown in Figs. 2 and 4 and particular reference to Fig. 4 being made, it will be easily understood that by slight pressure inwardly, on the relatively narrow flexible side wall I8 below the gripping flap 44, by the rear faces of the operators nger tips, will cause a separation or pocket, to be formed between said gripping flap 44 and the underlying side wall I8, into which the operators finger tips may readily be inserted for gripping the tab 44, thereby permitting a positive grip to be made between the finger tips and thumb, prior to severance along said lines of perfor-ations 32.

Referring to Fig. 5 the filter pad container shown therein has been temporarily closed after use, and it is preferable, although not absolutely necessary, to reinsert the relatively stiff upper member as a protective inner cover, to further ensure the unused portion of the filter stacks against infiltration of foreign matter, such as dust, hair, oil slick or the like, and contamination from handling. It will be seen that the central flap and gripping tab portion 44, may be inserted when closed, and held in frictional contact with the inner face of the narrow side l, thus providing a sanitary and relatively snug closure member.

It is not infrequent that during shipment of such containers, one or more of the containers get distorted or misshapened, in such cases the hinged cover 34 when opened tends to assume an unnatural angle with respect to its lines of severance, or edges 54 and 56; to facilitate the easy closing of such a misaligned cover, inclined edges of the gripping tab 44 converge towards the gripping portion of said cover, said inclined edges being adapted to cam on the edges 54 or 56, of the container top when closing said cover, to realign said cover along its lines of severance, and ensure proper closure of the hinged cover 34.

In use, a filter pad holder of the type herein described, is usually placed within easy reach of the operator. However, other means, such as a holder, or frame affixed to a wall may be used, several of which are commercially available,

thereby permitting the free use of one hand while extraction of a filter pad by the other is accomplished. It will be understood, however, that this container support forms no part of the present invention and is used only by way of example.

Various modifications and additional applications will suggest themselves to those skilled in the art. The embodiment shown is only by way of illustration, and not in a limiting sense; all modifications within the scope of this invention are intended to be covered in the appended claim.

What is claimed is:

A filter disk package adapted to facilitate sanitary storage, transportation and removal of individual filter disks therefrom, comprising a preformed box-like `completely sealed sanitary container having all rectangular surfaces, spaced perforated lines across the container top to define a future hinged closure and a stationary disk retaining portion of said top, said closure when opened along said lines providing access to the interior of the lter container, at least one stack of compressed originally fluiy, voluminous and resilient filter disks Within the container, the aperture formed by opening of said closure being of dimension to expose a suiiicient part of said stack of ltcr disks to permit fingergrasping and removal, the exposed portions of said disks being in a relatively uncompressed state so that the topmost iii-ter disk projects beyond the top of the container, the stationary portions of said top being of sufficient dimension to retain the unexposed disks within the container and in compressed condition during removal of the topmost disks portions of said stack of but said stationary portions being sufficiently small to permit removal of the topmost disks without injury to the disks during removal, a perforated edge of said aperture serving as a pivot line along which the freed stack portions are caused by reason of their expanded state to project beyond the top of the container and present the topmost filter disk for individual gripping and removal.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 1,523,685 Cohn Jan. 2G, 1925 2,122,480 Lovvey July 5, 1938 2,125,642 Bergstein July 26, 1938 2,181,837 Snyder et al Nov. 28, 1939 2,246,484 Frieders June 17, 1941 2,309,795 Siegel Feb. 2, 1943 2,354,186 Donahue July 25, 1944, 

